I love tttf. Puts down nice deep roots. Drought tolerant. Very wear tolerant. Not susceptable to most diseases or insects. About as bullet proof a lawn as you will get. There are some endophyte enhanced varieties out now too. I prefer a blend of 3 or more varieties mixed with a little perennial rye and some blue. I have used some from a local seed co with good results, and have always had good luck with lesco Teram Mates Plus, and their Tuff Turf and Tri Gold are great too. The Tri Gold is blue tag certified and a little pricey, but makes a beautiful lawn.